JP2002362429A - Underfloor structure of automobile - Google Patents
Underfloor structure of automobileInfo
- Publication number
- JP2002362429A JP2002362429A JP2001174082A JP2001174082A JP2002362429A JP 2002362429 A JP2002362429 A JP 2002362429A JP 2001174082 A JP2001174082 A JP 2001174082A JP 2001174082 A JP2001174082 A JP 2001174082A JP 2002362429 A JP2002362429 A JP 2002362429A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- airflow
- width direction
- front wheel
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車の床下構
造に関する。The present invention relates to an underfloor structure of an automobile.
【０００２】[0002]
【従来の技術】自動車の高速走行時において、走行状況
に応じて前輪の直前に設置した気流偏向板を下降あるい
は上昇させて、車両に対する空力特性を改善させて走行
性能を向上させようとする技術が、特開平５−１０５１
２４号公報に開示されている。また、ブレーキ冷却を目
的に、前輪の直前に気流偏向板を設置するとともに、ブ
レーキ冷却風を導く溝状の気流ガイドを備えた床下構造
が、特開平１１−４３０７５号公報に開示されている。2. Description of the Related Art When a vehicle is running at high speed, an airflow deflector installed immediately in front of a front wheel is lowered or raised in accordance with a running condition to improve aerodynamic characteristics of the vehicle to improve running performance. Japanese Patent Laid-Open No. 5-1051
No. 24 discloses this. Japanese Patent Application Laid-Open No. 11-43075 discloses an underfloor structure in which an airflow deflector is provided immediately before the front wheels for the purpose of cooling the brake, and a groove-shaped airflow guide for guiding the brake cooling air is provided.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前者の
ものは、車両の空気抵抗が低減して抗力係数を減少させ
ることができるものの、車両に対して鉛直方向上向きの
力が増大し、揚力係数が大きくなるという問題がある。
一方、後者のものについても、車両に対して鉛直方向上
向きの力を減少させる気流が不充分で、揚力係数を改善
できないとい問題がある。However, in the former, although the drag of the vehicle can be reduced by reducing the air resistance of the vehicle, the force upward in the vertical direction with respect to the vehicle increases, and the lift coefficient increases. There is a problem that it becomes larger.
On the other hand, the latter also has a problem that the airflow for reducing the vertical upward force on the vehicle is insufficient and the lift coefficient cannot be improved.
【０００４】そこで、この発明は、車両の空気抵抗を減
少させるとともに、車両に対して鉛直方向上向きの力を
減少ささせることを目的としている。Accordingly, an object of the present invention is to reduce the air resistance of a vehicle and reduce the upward force on the vehicle in the vertical direction.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に、請求項１の発明は、自動車の床下前部をアンダカバ
ーで覆い、このアンダカバーは、左右前輪の直前部分に
て下方および車幅方向にそれぞれ延長される気流偏向板
と、前記左右前輪の車両前方側でかつ前記気流偏向板の
車両前方側部分にて、車両前方から後方に向けて上方に
傾斜する前輪前部傾斜部とをそれぞれ有し、前記気流偏
向板の上部と前記前輪前部傾斜部の車両後方部との間
に、前記気流偏向板の車両前方側におけるアンダカバー
下部からホイールハウスに通じる開口部を設け、この開
口部は、車幅方向長さが、車両前方から見て少なくとも
前記前輪の幅方向全域を覆う長さに設定されている構成
としてある。In order to achieve the above object, according to the first aspect of the present invention, an undercover front part of an automobile is covered with an undercover, and the undercover is provided at a position just below right and left front wheels and at a position just below the front wheels. An airflow deflector that is extended in the width direction, and a front wheel front inclined portion that inclines upward from the vehicle front to the rear at a vehicle front side of the left and right front wheels and a vehicle front side portion of the airflow deflector. Respectively, between the upper part of the airflow deflector and the vehicle rear part of the front wheel front inclined part, an opening communicating with the wheel house from the undercover lower part on the vehicle front side of the airflow deflector is provided. The opening is configured so that the length in the vehicle width direction is set to a length that covers at least the entire width direction of the front wheel when viewed from the front of the vehicle.
【０００６】請求項２の発明は、請求項１の発明の構成
において、前輪前部傾斜部の下部側における開口部に通
ずる気流通路の車幅方向両側は、側壁により閉塞されて
いる構成としてある。According to a second aspect of the present invention, in the configuration of the first aspect of the invention, both sides in the vehicle width direction of the airflow passage leading to the opening at the lower side of the front wheel inclined portion are closed by side walls. .
【０００７】請求項３の発明は、請求項１または２の発
明の構成において、気流偏向板は、車幅方向長さが、車
両前方から見て少なくとも前輪の幅方向全域を覆い隠す
長さに設定されている構成としてある。According to a third aspect of the present invention, in the configuration of the first or second aspect, the airflow deflector has a length in the vehicle width direction that covers at least the entire width of the front wheel as viewed from the front of the vehicle. There is a set configuration.
【０００８】請求項４の発明は、請求項１ないし３のい
ずれかの発明の構成において、気流偏向板および前輪前
部傾斜部は、アンダカバーにおける他の部分と一体に形
成されている構成としてある。According to a fourth aspect of the present invention, in the configuration of any one of the first to third aspects, the airflow deflector and the front wheel front inclined portion are formed integrally with other portions of the undercover. is there.
【０００９】[0009]
【発明の効果】請求項１の発明によれば、前輪の直前に
配置した気流偏向板により、気流が偏向されて前輪に当
たる気流が減少し、車両に対する空気抵抗が減少すると
ともに、前輪前部傾斜部に沿って後方に流れる気流が、
その後方の開口部からホイールハウスに向かって流れる
ので、前輪前部傾斜部の前方のアンダカバー先端部付近
の気流が増加してその流速が高まり、車両に対する鉛直
方向下向きの力が増加して走行性能を向上させることが
できる。According to the first aspect of the present invention, the airflow is deflected by the airflow deflecting plate disposed immediately in front of the front wheels to reduce the airflow impinging on the front wheels, thereby reducing the air resistance to the vehicle and the front wheel front inclination. The airflow flowing backward along the part,
As it flows from the rear opening toward the wheel house, the airflow near the front end of the undercover in front of the front wheel front slope increases, the flow velocity increases, and the vertical downward force on the vehicle increases and the vehicle runs. Performance can be improved.
【００１０】請求項２の発明によれば、前輪前部傾斜部
の下部側から開口部を経てホイールハウスに流れる気流
が確実に増大し、車両に対する鉛直方向下向きの力を確
実に増加させることができる。According to the second aspect of the present invention, the airflow flowing from the lower side of the front wheel inclined portion through the opening to the wheel house is reliably increased, and the vertical downward force on the vehicle is reliably increased. it can.
【００１１】請求項３の発明によれば、気流偏向板によ
る気流の偏向が確実になされ、前輪に当たる気流を確実
に減少させることができる。According to the third aspect of the present invention, the airflow is reliably deflected by the airflow deflector, and the airflow hitting the front wheels can be reliably reduced.
【００１２】請求項４の発明によれば、アンダカバーの
製造、取り扱いおよび車両への組み付けが容易に行え、
低コストで、空気抵抗を減少させることができると同時
に、車両に対して鉛直方向上向きの力を減少させること
ができる。According to the fourth aspect of the present invention, the manufacture and handling of the under cover and the assembly to the vehicle can be easily performed.
At low cost, the air resistance can be reduced, and at the same time, the upward force on the vehicle can be reduced.
【００１３】[0013]
【発明の実施の形態】以下、この発明の実施の形態を図
面に基づき説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は、この発明の実施の一形態に係わる
自動車の床下構造に適用されるエンジンアンダカバー
（以下、単にアンダカバーと呼ぶ）１の斜視図、図２
は、このアンダカバー１が取り付けられた自動車前部の
底面図、図３は同側面図、図４は同正面図である。FIG. 1 is a perspective view of an engine undercover (hereinafter, simply referred to as an undercover) 1 applied to an underfloor structure of an automobile according to an embodiment of the present invention, and FIG.
FIG. 3 is a bottom view of the front portion of the automobile to which the under cover 1 is attached, FIG. 3 is a side view thereof, and FIG. 4 is a front view thereof.
【００１５】上記したアンダカバー１は、図２に示すよ
うに左右の前輪３より車両前方側にて車両前端部の床下
面を車幅方向のほぼ全長にわたり覆うカバー前部５と、
このカバー前部５の左右の前輪３，３相互間に対応する
部位から車両後方に向けて延長され、その後端７ａが前
輪３の車両前後方向ほぼ中央に位置するカバー後部７と
を有している。このカバー前部５およびカバー後部７
は、互いに連続した平板状に一体に形成されている。符
号８はバンパである。As shown in FIG. 2, the under cover 1 has a cover front portion 5 covering the entire lower surface of the floor at the front end of the vehicle from the left and right front wheels 3 to the front of the vehicle over substantially the entire width of the vehicle.
The cover front portion 5 is extended toward the rear of the vehicle from a portion corresponding to a portion between the left and right front wheels 3, 3, and has a rear end 7 a having a cover rear portion 7 located substantially at the center of the front wheel 3 in the vehicle front-rear direction. I have. The front part 5 of the cover and the rear part 7 of the cover
Are integrally formed in a continuous flat plate shape. Reference numeral 8 is a bumper.
【００１６】カバー前部５の車両後端部側には、車幅方
向両端部から、カバー後部７の車幅方向両側縁７ｂより
車幅方向内側まで延長され、かつ鉛直方向下方に垂下さ
れる気流偏向板９が設けられている。この気流偏向板９
は、左右の前輪３の直前部分に位置し、図４に示すよう
に、車両前方から見て少なくとも前輪３の幅方向全域を
覆う長さに設定されている。気流偏向板９の車幅方向長
さは、上記したように少なくとも車両前方から見て前輪
３の幅方向全域を覆う長さであればよく、図４に示した
長さに限定されるものではない。At the vehicle rear end side of the cover front portion 5, both ends in the vehicle width direction extend from both side edges 7b of the cover rear portion 7 to the inside in the vehicle width direction and hang down vertically. An airflow deflector 9 is provided. This airflow deflection plate 9
Are located in front of the left and right front wheels 3 and are set to a length that covers at least the entire width direction of the front wheels 3 as viewed from the front of the vehicle, as shown in FIG. The length of the airflow deflecting plate 9 in the vehicle width direction may be a length that covers at least the entire width direction of the front wheel 3 when viewed from the front of the vehicle as described above, and is not limited to the length shown in FIG. Absent.
【００１７】カバー後部７の車幅方向両側縁７ｂより車
幅方向外側位置で、カバー前部５の車両後方側部分に
は、車両前方から同後方に向けて上方に傾斜する前輪前
部傾斜部１１が設けられている。この前輪前部傾斜部１
１は、前輪３の車両前方側に位置しており、車幅方向両
側から、カバー前部５上に垂下される三角形状の側壁１
３を有している。また、前輪前部傾斜部１１の車両後端
部側と気流偏向板９との間には、前輪前部傾斜部１１の
下部の気流通路と、図３に示すホイールハウス１５とを
連通する開口部１７が形成されている。A front wheel front inclined portion that is inclined upward from the front of the vehicle toward the rear of the vehicle at the vehicle rear side portion of the cover front portion 5 at a position outside the both side edges 7b of the cover rear portion 7 in the vehicle width direction. 11 are provided. This front wheel front slope 1
Reference numeral 1 denotes a triangular side wall 1 which is located on the front side of the front wheel 3 and is hung on the cover front part 5 from both sides in the vehicle width direction.
Three. Further, an opening communicating between the airflow passage below the front wheel front inclined portion 11 and the wheel house 15 shown in FIG. 3 is provided between the vehicle rear end side of the front wheel front inclined portion 11 and the airflow deflector 9. A part 17 is formed.
【００１８】上記した開口部１７は、前輪３の車両前方
側に位置しており、車両前方から見て少なくとも前輪３
の幅方向全域を覆う部分に開口していればよい。また、
気流偏向板９および前輪前部傾斜部１１は、アンダカバ
ー１の他の部分、すなわちカバー前部５およびカバー後
部７と一体に形成されている。The opening 17 is located on the front side of the front wheel 3 with respect to the vehicle, and at least the front wheel 3 when viewed from the front of the vehicle.
It is sufficient that the opening is provided in a portion covering the entire area in the width direction. Also,
The airflow deflecting plate 9 and the front wheel front inclined portion 11 are formed integrally with other portions of the under cover 1, namely, the cover front portion 5 and the cover rear portion 7.
【００１９】次に、上記した車両の床下前部における走
行時の気流の発生状態を、図５に基づき説明する。図５
は、図２のＡ−Ａ線で切断した断面部分を含む車両の側
面図である。ただし、断面部分としては、気流偏向板９
および前輪前部傾斜部１１を含むアンダカバー１のみと
してある。Next, a description will be given of a state of generation of an airflow at the time of traveling in the front part under the floor of the vehicle with reference to FIG. FIG.
FIG. 3 is a side view of the vehicle including a cross-sectional portion taken along line AA of FIG. 2. However, as the cross section, the airflow deflector 9
And only the undercover 1 including the front wheel front inclined portion 11.
【００２０】車両前方から床下部に流れ込む気流１９の
一部は、気流２１で示すように、気流偏向板９によって
下方に偏向される。これにより気流１９の前輪３への干
渉が抑えられるので、車両走行時での空気抵抗が減少す
る。このとき気流偏向板９は、車幅方向長さが、車両前
方から見て少なくとも前輪３の幅方向全域を覆い隠す長
さに設定されているので、気流の偏向が確実になされ、
前輪３に当たる気流を確実に減少させることができる。A part of the airflow 19 flowing into the lower part of the floor from the front of the vehicle is deflected downward by the airflow deflector 9 as indicated by an airflow 21. As a result, interference of the airflow 19 with the front wheels 3 is suppressed, so that air resistance during traveling of the vehicle is reduced. At this time, since the length of the airflow deflection plate 9 in the vehicle width direction is set to a length that covers at least the entire width direction of the front wheel 3 as viewed from the front of the vehicle, the airflow is reliably deflected,
The airflow hitting the front wheel 3 can be reliably reduced.
【００２１】気流１９の発生により、ホイールハウス１
５内には、前輪３の車両前方側から入り込む気流２３
と、同後方側から入り込む気流２５とが発生する。前方
からの気流２３については、前輪前部傾斜部１１の下部
に沿って流れ、気流偏向板９と前輪前部傾斜部１１との
間の開口部１７から後方に流出する気流２７により増加
する。このとき開口部１７は、車両前方から見て前輪３
の幅方向全域を覆うよう設定されるとともに、前輪前部
傾斜部１１の下部の気流通路は、左右の両側壁１３によ
って車幅方向両側が閉塞されているので、開口部１７を
経てホイールハウス１５に流れ込む気流が確実に増加す
る。The generation of the airflow 19 causes the wheel house 1
5, there is an airflow 23 entering the front wheel 3 from the front side of the vehicle.
And an airflow 25 entering from the rear side. The airflow 23 from the front flows along the lower part of the front wheel inclined portion 11 and is increased by the airflow 27 flowing backward from the opening 17 between the airflow deflector 9 and the front wheel inclined portion 11. At this time, the opening 17 is formed by the front wheel 3 as viewed from the front of the vehicle.
Is set so as to cover the entire width direction of the vehicle, and the airflow passage below the front wheel front inclined portion 11 is closed on both sides in the vehicle width direction by the left and right side walls 13. The airflow flowing into the air is surely increased.
【００２２】これにより、アンダカバー１の車両前方側
の端部２９付近の気流１９の流速が高まり、鉛直方向下
向きの圧力分布が増加して車両に対する鉛直方向下向き
の力、すなわちダウンフォースが増加して空力特性が向
上し、走行性能が向上する。As a result, the flow velocity of the airflow 19 near the end 29 on the vehicle front side of the under cover 1 increases, and the pressure distribution in the vertical downward direction increases, so that the vertical downward force on the vehicle, that is, the downforce, increases. The aerodynamic characteristics are improved, and the running performance is improved.
【００２３】図６は、上記したアンダカバー１を装備し
た本実施形態による車両と、他の構造の車両との空力特
性の違いを比較して示している。図６において、横軸が
抗力係数変化量ΔＣD、縦軸は前輪揚力係数変化量ΔＣ
LFである。FIG. 6 shows a comparison of the difference in aerodynamic characteristics between the vehicle equipped with the under cover 1 according to the present embodiment and a vehicle having another structure. In FIG. 6, the horizontal axis represents the drag coefficient change amount ΔC D , and the vertical axis represents the front wheel lift coefficient change amount ΔC.
LF .
【００２４】ここで抗力係数変化量ΔＣDは、基準とす
る車両と比較する車両との抗力係数差である。基準とす
る車両の抗力係数を（ＣD）Sとし、他の任意構造の車両
の抗力係数を（ＣD）Ａとしたとき、ΔＣDを次のように
定義する。Here, the drag coefficient change amount ΔC D is the difference between the drag coefficient of the reference vehicle and the drag coefficient of the reference vehicle. Assuming that the drag coefficient of the reference vehicle is (C D ) S and the drag coefficient of the vehicle having any other structure is (C D ) A , ΔC D is defined as follows.
【００２５】ΔＣD＝（ＣD）Ａ−（ＣD）S 同様に、前輪揚力係数変化量ΔＣLFも、以下のように定
義する。ΔC D = (C D ) A − (C D ) S Similarly, the front wheel lift coefficient change amount ΔC LF is defined as follows.
【００２６】 ΔＣＬＦ＝（ＣＬＦ）Ａ−（ＣＬＦ）S したがって、抗力係数変化量ΔＣDにおいて、基準値車
両より比較する車両の抗力係数が小さくなるときはマイ
ナス（改善）となり、逆に大きくなるときはプラス（悪
化）となる。同様に、前輪揚力係数変化量ΔＣＬＦにお
いても、基準値車両より比較する車両の揚力係数が小さ
くなる（ダインフォース増加）ときはマイナス（改善）
となり、逆に大きくなる（ダインフォース減少）ときは
プラス（悪化）となる。ΔC LF = (C LF ) A − (C LF ) S Therefore, the drag coefficient variation ΔC D becomes negative (improved) when the drag coefficient of the vehicle compared with the reference value vehicle is smaller than the reference value vehicle. When it becomes larger, it becomes plus (deterioration). Similarly, the front wheel lift coefficient change amount ΔC LF is also negative (improved) when the lift coefficient of the vehicle to be compared with the reference value vehicle is smaller (increased dainforce).
On the other hand, when it becomes larger (decrease of dainforce), it becomes plus (deterioration).
【００２７】図６中で中央の点Ｓは、図１のアンダカバ
ー１における気流偏向板９および前輪前部傾斜部１１の
いずれも備えていない一般的なアンダカバーを装備した
基準値車両のものである。点Ａは、図１から図５で説明
した本発明の実施形態によるアンダカバー１を装備した
車両のものである。また点Ｂは、基準値車両に気流偏向
板９のみを追加した車両のもの、点Ｃは、基準車両に前
輪前部傾斜部１１のみを追加した車両のものである。The center point S in FIG. 6 is that of a reference vehicle equipped with a general undercover without any of the airflow deflecting plate 9 and the front front inclined portion 11 in the undercover 1 of FIG. It is. Point A is for a vehicle equipped with the undercover 1 according to the embodiment of the present invention described with reference to FIGS. Point B is for a vehicle in which only the airflow deflecting plate 9 is added to the reference value vehicle, and point C is for a vehicle in which only the front wheel front inclined portion 11 is added to the reference vehicle.
【００２８】図６から明らかなように、気流偏向板９の
みを備えた車両（点Ｂ）は、抗力係数ΔＣDが改善され
ているものの、揚力係数ΔＣLFが悪化し、前輪前部傾斜
部１１のみを備えた車両（点Ｃ）は、揚力係数ΔＣLFが
改善されているものの、抗力係数ΔＣDが悪化し、一方
気流偏向板９および前輪前部傾斜部１１を共に備えた本
発明の実施形態による車両（点Ａ）は、抗力係数Δ
ＣD、揚力係数ΔＣLFともに、改善されていることがわ
かる。As can be seen from FIG. 6, the vehicle provided with only the airflow deflector 9 (point B) has an improved drag coefficient ΔC D, but has a deteriorated lift coefficient ΔC LF, and has a front wheel front inclined portion. 11 (point C), the lift coefficient ΔC LF is improved, but the drag coefficient ΔC D is deteriorated, while the vehicle of the present invention having both the airflow deflector 9 and the front wheel front inclined portion 11 is improved. The vehicle (point A) according to the embodiment has a drag coefficient Δ
It can be seen that both C D and lift coefficient ΔC LF are improved.
【００２９】また、気流偏向板９および前輪前部傾斜部
１１は、アンダカバー１における他の部分、すなわちカ
バー前部５およびカバー後部７と一体に形成されている
ので、アンダカバー１の製造、取り扱いおよび車両への
組み付けが容易に行え、低コストで、空気抵抗を減少さ
せることができると同時に、車両に対して鉛直方向上向
きの力を減少させることができる。Further, since the air flow deflector 9 and the front wheel front inclined portion 11 are formed integrally with other portions of the under cover 1, that is, the cover front portion 5 and the cover rear portion 7, the production of the under cover 1 is simplified. It is easy to handle and assemble to the vehicle, and can reduce the air resistance at low cost, and at the same time, reduce the vertical upward force on the vehicle.
【図１】この発明の実施の一形態を示すアンダカバーの
斜視図である。FIG. 1 is a perspective view of an under cover showing one embodiment of the present invention.
【図２】図１のアンダカバーが取り付けられた自動車前
部の底面図である。FIG. 2 is a bottom view of the front part of the vehicle to which the under cover of FIG. 1 is attached.
【図３】図１のアンダカバーが取り付けられた自動車前
部の側面図である。FIG. 3 is a side view of a front part of the vehicle to which the under cover of FIG. 1 is attached.
【図４】図１のアンダカバーが取り付けられた自動車の
正面図である。FIG. 4 is a front view of the automobile to which the under cover of FIG. 1 is attached.
【図５】図２のＡ−Ａ線で切断した断面部分を含む自動
車前部の側面図である。FIG. 5 is a side view of the front part of the vehicle including a cross-section taken along line AA of FIG. 2;
【図６】図１のアンダカバーを装備した車両と、他の構
造の車両との空力特性の違いを比較して示した説明図で
ある。FIG. 6 is an explanatory diagram showing a comparison of the difference in aerodynamic characteristics between a vehicle equipped with the under cover of FIG. 1 and a vehicle having another structure.
１ アンダカバー ３ 左右前輪 ９ 気流偏向板 １１ 前輪前部傾斜部 １３ 側壁 １５ ホイールハウス １７ 開口部 REFERENCE SIGNS LIST 1 under cover 3 left and right front wheels 9 airflow deflector plate 11 front wheel front inclined portion 13 side wall 15 wheel house 17 opening
Claims (4)
い、このアンダカバーは、左右前輪の直前部分にて下方
および車幅方向にそれぞれ延長される気流偏向板と、前
記左右前輪の車両前方側でかつ前記気流偏向板の車両前
方側部分にて、車両前方から後方に向けて上方に傾斜す
る前輪前部傾斜部とをそれぞれ有し、前記気流偏向板の
上部と前記前輪前部傾斜部の車両後方部との間に、前記
気流偏向板の車両前方側におけるアンダカバー下部から
ホイールハウスに通じる開口部を設け、この開口部は、
車幅方向長さが、車両前方から見て少なくとも前記前輪
の幅方向全域を覆う長さに設定されていることを特徴と
する自動車の床下構造。1. An undercover front portion of an automobile is covered with an undercover. The undercover covers airflow deflector plates extending downward and in the vehicle width direction immediately before left and right front wheels, respectively, and a vehicle front side of the left and right front wheels. And at the vehicle front side portion of the airflow deflector, having a front wheel front inclined portion inclined upward from the front to the rear of the vehicle, respectively, the upper portion of the airflow deflector and the front wheel front inclined portion Between the vehicle rear portion, an opening communicating with the wheel house from the lower part of the under cover on the vehicle front side of the airflow deflector is provided, and this opening is
An underfloor structure of an automobile, wherein a length in a vehicle width direction is set to a length covering at least an entire width direction of the front wheel when viewed from the front of the vehicle.
に通ずる気流通路の車幅方向両側は、側壁により閉塞さ
れていることを特徴とする請求項１記載の自動車の床下
構造。2. The underfloor structure for an automobile according to claim 1, wherein both sides in the vehicle width direction of the airflow passage leading to the opening at the lower side of the front wheel front inclined portion are closed by side walls.
方から見て少なくとも前輪の幅方向全域を覆い隠す長さ
に設定されていることを特徴とする請求項１または２記
載の自動車の床下構造。3. The airflow deflection plate according to claim 1, wherein the length in the vehicle width direction is set to a length that covers at least the entire width direction of the front wheel when viewed from the front of the vehicle. Underfloor structure of a car.
ンダカバーにおける他の部分と一体に形成されているこ
とを特徴とする請求項１ないし３のいずれかに記載の自
動車の床下構造。4. The under-floor structure of an automobile according to claim 1, wherein the air flow deflector and the front wheel front inclined portion are formed integrally with other portions of the under cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001174082A JP2002362429A (en) | 2001-06-08 | 2001-06-08 | Underfloor structure of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001174082A JP2002362429A (en) | 2001-06-08 | 2001-06-08 | Underfloor structure of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002362429A true JP2002362429A (en) | 2002-12-18 |
Family
ID=19015419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001174082A Pending JP2002362429A (en) | 2001-06-08 | 2001-06-08 | Underfloor structure of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002362429A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006327281A (en) * | 2005-05-23 | 2006-12-07 | Nissan Motor Co Ltd | Fairing device of tire |
| JP2011121528A (en) * | 2009-12-11 | 2011-06-23 | Nippon Plast Co Ltd | Vehicle panel structure |
| JP2014125013A (en) * | 2012-12-25 | 2014-07-07 | Fuji Heavy Ind Ltd | Flow straightening device of vehicle wheel house |
| JP2016501766A (en) * | 2012-11-12 | 2016-01-21 | ルノー エス．ア．エス． | Low aerodynamic screen for automotive front shield |
| KR20160063153A (en) * | 2014-11-26 | 2016-06-03 | 현대자동차주식회사 | Aerodynamic structure of vehicle |
| JP2017013710A (en) * | 2015-07-03 | 2017-01-19 | 富士重工業株式会社 | Engine room cooling structure |
| CN107757725A (en) * | 2016-08-22 | 2018-03-06 | 马自达汽车株式会社 | The rectification construction of automobile |
| CN108622213A (en) * | 2017-03-17 | 2018-10-09 | 福特全球技术公司 | Active air dynamical type underbody shield system and up and down balance system method of adjustment |
| CN110303994A (en) * | 2018-03-20 | 2019-10-08 | 丰田自动车株式会社 | Bottom plate lower cover and the electric vehicle for having the bottom plate lower cover |
| CN113830202A (en) * | 2021-10-11 | 2021-12-24 | 岚图汽车科技有限公司 | New energy automobile bottom guard plate platform design method |
-
2001
- 2001-06-08 JP JP2001174082A patent/JP2002362429A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006327281A (en) * | 2005-05-23 | 2006-12-07 | Nissan Motor Co Ltd | Fairing device of tire |
| JP2011121528A (en) * | 2009-12-11 | 2011-06-23 | Nippon Plast Co Ltd | Vehicle panel structure |
| JP2016501766A (en) * | 2012-11-12 | 2016-01-21 | ルノー エス．ア．エス． | Low aerodynamic screen for automotive front shield |
| JP2014125013A (en) * | 2012-12-25 | 2014-07-07 | Fuji Heavy Ind Ltd | Flow straightening device of vehicle wheel house |
| KR102142285B1 (en) * | 2014-11-26 | 2020-08-07 | 현대자동차 주식회사 | Aerodynamic structure of vehicle |
| KR20160063153A (en) * | 2014-11-26 | 2016-06-03 | 현대자동차주식회사 | Aerodynamic structure of vehicle |
| JP2017013710A (en) * | 2015-07-03 | 2017-01-19 | 富士重工業株式会社 | Engine room cooling structure |
| CN107757725A (en) * | 2016-08-22 | 2018-03-06 | 马自达汽车株式会社 | The rectification construction of automobile |
| CN108622213A (en) * | 2017-03-17 | 2018-10-09 | 福特全球技术公司 | Active air dynamical type underbody shield system and up and down balance system method of adjustment |
| CN110303994A (en) * | 2018-03-20 | 2019-10-08 | 丰田自动车株式会社 | Bottom plate lower cover and the electric vehicle for having the bottom plate lower cover |
| CN110303994B (en) * | 2018-03-20 | 2022-08-16 | 丰田自动车株式会社 | Underbody shield and electric vehicle provided with same |
| CN113830202A (en) * | 2021-10-11 | 2021-12-24 | 岚图汽车科技有限公司 | New energy automobile bottom guard plate platform design method |
| CN113830202B (en) * | 2021-10-11 | 2022-06-07 | 岚图汽车科技有限公司 | New energy automobile bottom guard plate platform design method |
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